Earplug



FIG. 1 is a front, top, right side perspective view of an earplug,showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a front, bottom, right side perspective view thereof.

CLAIM The ornamental design for an earplug, as shown and described.